diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2009-07-21 16:07:37 +0200 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2011-12-28 16:25:30 -0600 |
| commit | c3913a6b22645f2222b20d792da734cc2aefff81 (patch) | |
| tree | af456bd3d9dfbc4743ae3fbaa47c4618f6384c11 /kernel/irq | |
| parent | 3231ec0dab2ec693eb33effdc2a91e394d9bc810 (diff) | |
genirq: Disable random call on preempt-rt
The random call introduces high latencies and is almost
unused. Disable it for -rt.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/irq')
| -rw-r--r-- | kernel/irq/handle.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index 470d08c82bbe..634620c1b291 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -156,8 +156,11 @@ handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action) action = action->next; } while (action); +#ifndef CONFIG_PREEMPT_RT_FULL + /* FIXME: Can we unbreak that ? */ if (random & IRQF_SAMPLE_RANDOM) add_interrupt_randomness(irq); +#endif if (!noirqdebug) note_interrupt(irq, desc, retval); |